Water-meter.



H. I. DILTS.

WATER METER,

APPLICATION FILED MAR. 18, 1910.

Patented Aug. 2, 1910.

Inventor A ttest citizen of the United prevent the flow throu h ITED STATES 'PATEN HENRY I. DILTS, or NEW YoRK, N. Y., ASSIGNOR 'To NEPTUNE METER COMPANY, or NEW Yo K, N. Y., A CORPORATION or NEW JERSEY.

WATER-METER.

Specification of Letters Patent.

Patented Aug. 2, 1910.

To all whom it may concern:

Be it known that I, HENRY I. DILTS, a Lon Island Cit ,of the borough of Queens, of the city of ew York, in the State of New York, have invented certain new and useful Improvements in Water-Meters, of which the following is a specification, reference being had to the accompanying drawing, forming a part hereof.

The invention relates to compound water 'meters in which a high-duty metering device' and a low-duty metermg device are combined, a valve, operated by variations in the ressure difierential, actmg to permit the libw through one of such meters, andto the other of such arly concerned with valve' by which the meters, and it is particu the construction of the flow through one meter or the other is determined. In the present case the valve body. is so constructed and arranged as to permit .a straight or nearl straight flow of the liquid from the high-duty metering device to the outlet when the flow is so great as to cause the valve, through the increase in the pressure differential, to open the highduty passage or branch, thereby reducing the internal resistance of the meter.

The invention will be more fully explained hereinafter with reference to the accompanying drawing which presents a view, partly in elevation and partly in vertical section, of a compound meter which embodies the invention.

As in the structure represented in the drawing, the relatively high-dut metering device a and therelatlvel lowuty metering device 6, are prefera l although not necessarily, combined in a single structure. .These metering dev1ces,=moreover, may be of any suitable character, the metering device a being shown as of the turbine type,

which is we 1 adapted to register accurately large flows 0 liquid, while the metering de- Vice 6 is of the nutating disk type, which is Well adapted to register accurately small flows of liquid.

The metering devices are respectively rovided, as usual, with re istering mec anisms, as at a and b. In the structure shown there is a common inlet or inflow openin for the liquid at c and a common outlet or outflow at d. The liquid which enters at the inlet 0 passes into a chamber e from which,

States, and residing in the low-duty In the chamber Z is disposed a valve body according to the position of the valve heremafter referred to, it flows either through that branch of the common conduit which includes the high-duty metering device a and the channel it escapes through the outlet 03, or through that branch which includes the channel g, metering device I) and the channel 72., into the chamber f.

In the wall z'between the high-duty branch or channel eand the common outflow chamber f is .a channel or assage k, which communicates at one end with the high-duty channel 6 and at the other end with the common outflow chamber 7, the channel being more or less directly in line witl the high-duty meter and the outlet (Z, according to convenience in manufacture, so that when the flow is through the high-duty branch the internal resistance is much-less than is the case when the direction of flow is materially changed. In the wall 11 is also formed a cylindrical chamber Z which intersects the channel 70, such chamber being in open communication at its lower end with the high-duty channel 6. If desired, a lining Z maybe rovided for the chamber as shown. The ciannel h from the low-duty meter terminates in a chamber m.

0, the upper part 0 of which is cylindrical or otherwise conforms to the cross section of the chamber, so that when the valve body is in'its lowest position, as shown in the drawing, it cuts oil the channel is and prevents the flow of liquid from the channel e to the outflow'chamber' f, 'while the lower part of the valve body is spool-shaped as shown, having a head 0 at its lower end connected by a stem or spindle o with the cylindrical or solid part 0, so that when the valve body is raised b an increased pressure against the underside of the lower head 0 the chamber 0* about the spindle 0 and between the head 0 will register with the channel A: and will permit direct flow of the liquid through such channel, without compellin the liquid to follow a more circuitous pat as would be the case if the liquid were compelled to 105 pass up through the chamber Z. The channel h is controlled by a valve body p. The two valve bodies 0 and p are fixedly united, as by being made integral or otherwise, and

are arranged to work vertically. In the con- 110 6, into the chamber f, whence 0 and the upper part 0, 10b

struction. shown the'valvc body p is tubular and is provided with a lateral port at which opens into the chamber f.

When the flow of liquid issmall the pressure differential between the inlet and the outlet is small and is insufiieient to overcome the weight of the valve-0, p. The valve therefore stands in itslowest position, as shown in the drawing, closing the passage is and opening the end of the channel It in the chamber m so that flow through the lowduty meter is permitted and flowthrough the high-duty meter is prevented. WVhcn, however, the flow is large, then the pressure differential increases and is sufiicient to cause the valve 0, p, to be raised, through the pressure on the underside of the head 0 opening the passage 7c so as to permit the flow of liquid through the high-duty meter, and closing the end of the channel h so as to prevent the How of liquid through the low-duty meter.

I claim as my invention:

The combination of a. relatively high-duty meter, a relatively low-duty meter, a common conduit having branches in which the two meters are respectively located, the inflow and the outflow being common to both branches, a wall between the high-duty branch'and the common outflow chamber, said wall having formedtherein a substantially, vertical cylindrical chamber in open nel between the upper part and its lower head and a valve body connected with the last named valve body to control the lowduty branch, whereby when the pressure differential is low the low-duty branch is open and the channel from the high-duty branch to the common outflow chamber is" closed by the solid upper part of the first named valve body, and when the pressure differential is high the valve .is raised, through the pressure against its lower head, to cause the chamber or channel in the lower part of the valve to register with the channel from the high-duty branch to the common outflow chamber, to permit flow through the high-duty branch, and the low-duty branch is closed.

This specification signed and vwitnessed this 11th day of March, A. D. 1910.

HENRY I. DILTS. I Signed in the presence of ELLA J. KRUGER, AMBROSE L. OSHEA'. 

